NEW YORK — A tidal wave of stray cats has hit New York City this summer, paralyzing its shelter system as volunteers scramble for solutions and call for more city action. The stray cats live hard lives, often sick and at risk of infection with missing eyes or limbs. They can also carry parasites and diseases, putting other cats or even people at risk. They poop on doorsteps and kill local wildlife like birds. There are so many that the typically timid animals have become a public nuisance in some hard-hit neighborhoods. Dozens of new volunteers and cat organizations have sprung to meet the pro...